Home > News > Counterfeiting Countermeasures
June 11th, 2007
He sees a lot of potential in nanotechnology, including nanocrystals that can be used to make pigments that aren't easy to duplicate and have spectral properties that can be easily verified by machine. "Unlike regular organic pigment molecules," he explains, nanocrystal pigments "have very narrow absorption windows." Nanocrystals made of semiconductor materials such as cadmium telluride and zinc sulfide or of metals such as gold and silver are already available. Color can be tuned by changing the size of the particles.
The committee also thinks lithography on a minute scale shows promise as a deterrent, Trevor says. Techniques including dip-pen lithography—in which the stylus of an atomic force microscope is used as a pen—could be used to print currency with text, images, or other patterns with dimensions in the nanometer to micrometer range. Such features could be viewed with a scanning optical microscope.
Editorial: Choices for Congress September 9th, 2010
Stephen Hawking - 'Don't Talk to Aliens' April 26th, 2010
It’s about damn time: Medvedev bans nanodemocracy April 15th, 2010
Savor maple syrup time in Ohio: Travel in 3s February 20th, 2010
3-D printing could lead to tiny medical implants, electronics, robots, more June 18th, 2013
Pioneering breakthrough of chemical nanoengineering to design drugs controlled by light June 18th, 2013
New Method to Synthesize Zinc Oxide Nanoparticles with High Catalytic Activity June 18th, 2013
An Innovative material for the Green Earth: Simple and inexpensive process to make a material for CO2 adsorption June 17th, 2013
Yes, nanoscience can enhance humans – but ethical guidelines must be agreed: People 'enhanced' into spider-climbing individuals with hugely projected breasts and Einstein-brains… Where will it stop? June 5th, 2013
Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013
Oh, Christmas tree, oh Christmas tree: A nano end for Christmas tree needles January 2nd, 2013
INIC Inks MoU to Apply Nanotechnology in Iran's Carpet Industry December 18th, 2012